Machine



(No Model.)` 4 sheetssheen 2.

5 B.1L. BRADLEY.

MOLDING MACHINE NQ. 376,704; Y Patented Jan. 17, 1883,.;

- A(No Model.)

MOI-DING MACHINE. 4 7

' No. 818,704. Pat-@md 8811.17. 1888.

WITNESSES: 7 i XNVENTOR zl 1mg/@jg l vowm@ ATTORNY. i

UNITED STATES f Vl'PATENT. OFFICE.

EENJAMINE L. BRADLEY, oE BALTIMORE, MARYLAND.

" MoLDlNG-MACHINE.

SPECIFICATION formingrpart of Ler'ts Patent N0.3'16,'7o4,darea January 17, ieee.

Application nieu June 14. ieee. serial No. 205,051; (No model.) Y

To all whom/zt may concern:

Be it known thatl, BENJAMINEL. BRADLEY, a citizen of the `United States, residing atBaltimore, in the State of Maryland, have invented certain new and useful Improvements in Molding-Machines, of which the following is a specification. My invention yrelatesto an improvement in wood-molding machines. Y

The objec-t of the invention is to provide a machine for producing strips of wood-molding having serpentine grooves and beads, as hereinafter specified. Y

The inventionis illustrated in the accompa- Y nying drawings, in`whi'ch-. p

Figure lis a plan or top view of the maV l chine. Fig. 2 is a side elevation of the same.

` of the hanger L and irregularly-shaped arm J.

Fig. 3 is a front view of thepmachine. Fig. liY

shows-two views-a top and side view-of the crank-head. Fig. 5 is a View of the mechanism toshift the cutter-frame. Fig. 6 is a view I vertical shaft, B, which is provided at its' up` per end with a crank-head, a, having a longi-l tudinallyadjustable pin, a', whereby in a well-known manner the throw of the crankA may be changed, and also has another crank,

` b, below the said crank-head.

The mechanism on the, table by which the cutters are operatedpis arranged in duplicate. One of the duplicated parts is supported on a fixed base, A', and the other part on a movable base, A2. This latter base has movement toward or from the xed base, being provided with slots c, 'and having set-screws c', fixed to the table A, occupying the slots. These setscrews retain themovable base whereverset.` v; A horizontal screw, d, hastwo collars, 02,and

turnsV in a threaded stud, o, fixed on the movable base A2. A standard, c4, is fined rigidly to thetable'A,1and has'at its top a slot which is occupied bythe said screw d.. lEach ofthe` 'zontal screw d above described, servesto ad-` Fig. l0 is an enlarged Vview.

which anydesired'shape or wellfknownform said standard c4. It will thus be seen that by" turning the wheel d' on the outer nend of the' said screw thebase A2 Amay be'mo-ved, as

stated. The object of moving the base Azfis" twocollars c2 takes on an oppositeside of the to increase or -lessen theV distance between the two sets of cutting mechanism.

Each base A and Ai has a cutter-support'- ingV arm, C, secured to it by bolts einfslots e',

`formed in said arm, and a screw, e2, on 'each arm, constructed and operating like the horijust each cutter-supporting arm'C independent of the other toward or away from the ta- 'ble-front, whereby the" cutters, which are at ik, may have their positions with respect to the table-front adjusted. The boards upon which the serpentine grooves or beads are to, be lcut will be passed in the direction of the dart across the table-front, resting upon a suitablesupport. (Not shownQi. The two arms C have an upwardly-projecting part, f, which supports a head, C', which is semicircular in a horizontalplane. This semicircular head has a central bearing, g, for the pivot-'bolt gof a cutter-f:

frameconsisting of a top horizontal bar, D,

andtwo downwardly-depending arms, g2., This cutter-frame is suspended by its pivot-'bolt g below the semieircular' headl C', and is capable of turning a half-revolution inahorizon.- Y tal plane, and at all times, when the'fcutterframe turns, the top horizontal bar, D, has bear'-` ing at g5 against the under side of the semicircular head. y

- YThe cutter-shaftE is carried by the said cut` ter-frame D, andsaid shaft has rotary and lon-v gitudinalmovement, the latter being provided for as follows: A bar, h., has bearings and slides freely endwise in the two, downwardlydepending arms g2. This bar h carries two vertical cross-bars, h', provided with bearingsrinj` which the cutter-shaft E rotates. '.Said shaft also passes freely through and turnsin the two downward arms y? of lthecutter-frame. It willl n' thus be seen that the bar hand cutter-.shaftF .p-i; VAmay be moved longitudinally in.the.''cirtterfg` frame-D,and that thecenter shaft alsorevolvesQl i roo This shaft Ehas a fixed and `a movable collar,

i i', and jam-nuts'j, for holdingthe cuttersfof r;

may be used, and therefore are. unnecessary to j H is seen at s.

familiar with these machines that the cutters are gripped at k between the said two collars di. A pulley, '52, on the cutter-shaft is designed for a belt (not shown) which is to pass` over an elevated pulley on a lineshaft, the said elevated pulley having position directly above the pivot-bolt g of the cutter-frame.

To provide for the coaction of the two pivoted cutter-frames D in turning, one frame being on each of the semicircular heads, a horizontal bar, F, is supported in bearings Zon the top of standards Z. This bar is free to have endwise movement in its bearings. The bar F also has at its center, between the two sets of cutting mechanism, a cross-slot, awhich is occupied by the pin a of the crank-head, the rotation of which latter, it will be seen, has the effect to impart an endwise reciprocating movement to the bar F. The bar F carries' two horizontal slotted arms, m,and each pivotbolt g of the cutter-frame has a rigidly-attached lever, g, which has position below the said arm m. .Apin, Q,on the levergapasses up through the slot in the arm m, whereby when the bar Fmoves endwise the two cutter-frames D will be partly turned on their pivot-bolts g', and thus change the position of the cutters at k.

To provide for the longitudinal movement of the cutter-shafts E, asecond horizontal bar, G, has one end supported in a bearing, n, on the top i of a standard, n. This bar has endwise movement in its bearing, and has position below and crosswise of the other bar, F. Like the other bar, it has a cross-slot, b', for the crank b on the vertical shaft B. By this means the bar G has an endwise-reciprocating movement given it. The end of the bar Gearries aplate, o, provided with two parallel slots, o. Two short arms, 19, are secured to the plate o, each one by a bolt, p', which passes through one of the slots o. The short arms p thereby may be adjusted to the extent of the length of the slot o. A lever, H, has one end pivoted at p to one of theshort arms. The other end is pivoted at q to ashort arm, I, which is attached` to the endwise-moving bar h, which shifts the cutter.

The means for attaching the short arm I to the bar h is a pivot, r, on a clip, r', which is capable of sliding on the bar h. This clip has a set-screw, r2, by which it is retained at any position on the bar h where it may be set. These parts are shown in detail in Figs. 2, 5, and 6. Both ends of the lever H, it will thus be seen, are pivoted, and said pivots p2 and q both shift. The fulcrum-pivot of this lever This fulcrum-pivot s projects upward at the end of an irregularly-shaped arm, J, which is secured by a bolt, t, to a hanger, L, attached to the semicircular head C'. This hanger L has at its lower end an inverted-T-shaped head, u, provided with a horizontal slot, u', which the lever H occupies, and the bottom of this head u has a curved slot, u. 'This curved slot is concentric with the fulcrum-pivot s.

The arm H is provided cupies the curved slot u2. The pin uand curved slotu2 prevent the lever H from moving endwise. 4 It will thus be seen that the endwise movement of the bar G will cause the lever H to be turned on its fulcrum-pivot s, and thereby the cutter-frame D will partly revolve.

The mechanism embracing lever H,short arm I, irregularly-shaped arm J, and hanger L is in duplicate, one set connecting with each of the two short arms p, IThis duplication of mechanism and the means employed to connect the sa me enables wood-molding to be produced with two or more serpentine grooves, as shown in Fig. 7, and permits the curves ofthe two grooves to be adj usted relatively to each other, as the operator may desire.

Having described my invention, I claim and desire to secure by Letters Patent of the United States- 1. In a wood-molding machine for producing strips having serpentine grooves, the combination of two cutter-frames pivoted to turn in a horizontal plane, a lever, y, attached to the pivot-bolt of each cutter-frame, the vertical shaft B for driving the shafts E and G', a bar, F, supported in bearings adapted to have endwise movement and connected with each of the'said levers g3, and endwise-reciprocating bar G, receiving its' movements directly from shaft B and transmitting movements to the frames D, and means to impart endwisereciprocating movement to the said bars, as set forth.

2. In a wood-mclding machine for producing strips having serpentine grooves, the combination of a table, A, two bases, A' A2, on the table, one fixed and the other adjustable toward or from the xed one, a cutterframe mounted on each base and each frame pivoted to turn in a horizontal plane, a lever, g3, attached to the pivot-bolt of each cutterframe, a bar,F,supported in bearings adapted to have endwise movement and connected with each of the said levers g, adjustable jointed connections between the said cutterframes, a rectilinear reciprocating bar receiving its movements from a shaft, B, and means to impart an endwise-reciprocating movement to the said bars, as set forth.

3. In a wood-molding machine for producing strips having serpentine grooves, the combination of a table, A, two cutter-supporting arms, C, each provided with means to adjust it independently ofthe other toward or away lfrom the table-front, a cutter-frame pivoted to each arm, a lever, g3, attached to'the pivotbolt of each cutter-frame, a bar, F, supported in bearings adapted to have endwise movement and connected with each of the said levers g3, a slotted rectilinear reciprocating bar, G, receiving its movements directly from a crank on the main driving-shaft, the plate o, the short armp, the hanger L, and the lever H, connecting the bar G to the frames D, and means toimpart endwisereciproeating movement to the said bars, as set forth.

IOC

IIO

4. In a Wood-molding machine forv producy ing strips having serpentine grooves, the combination of a cutter-'supporting arm, C, an

oscillating cutter-frame pivoted to said arm,

a bar, h, in bearings in the cutter-frame and adapted to slide endwise therein, a rotary cuttershaft, E, carried by said sliding bar, means, Substantially as shown, to partly revolve they cutterframe, and means, substantially as shown, to impart endwise movement to the cuttershaft, as set forth.

5. In a Wood-molding machine for producing str1' ps havingserpentine grooves, the combination of two cutter-frames pivoted to turn in a horizontal plane, a lever, g3, attached to the pivotbolt of each cutter-frame, a bar, F, supported in bearings adapt-ed Vto have endwise movement and Yconnected with each ofv the said levers g, means to impart an endwisereciprocating movement to the said bar, an

endwise-sliding`bar,h, in each cutter-frame,

a' rotary cutter-shaft, E, 'carried by saidsliding bar, a bar, G, extending `crosswise of the bary `both of the bars F G, as set forth.

In testimony whereof vI affix my signature in the presence of two witnesses. v 'BENJAMINE L. BRADLEY.

Witnesses: s l i JOHN E. MORRIS, JN0. T. MADDoX. 

